Login Register Sign up for the GRM e-newsletter

Login to post Forums » Grassroots Motorsports » Rough idle on 91 Jetta Gli NEED HELP
  • deveous9

    Oct. 31, 2011 3:59 p.m. deveous9 Reader

    So finally got the jetta brake problems solved. It runs like a champ but it has a idle problem. When i start it up it will idle high but when i rev it up it idles down and up. i have a low iddle issue and a high iddle issue. when i say low iddle issue i mean it kinds stumbles beween low and medium low. think i will add a video up soon.

  • mrwillie

    Oct. 31, 2011 4:33 p.m. mrwillie Reader

    Check for air leaks...look for torn, missing hoses, leaks around injector cups, etc...

  • Cone_Junky

    Oct. 31, 2011 5:26 p.m. Cone_Junky HalfDork

    mrwillie wrote:

    Check for air leaks...look for torn, missing hoses, leaks around injector cups, etc...

    ^^^Most likely culprit(s)^^^^^

    Also make sure timing is correct, coolant temp sender is working properly, throttel/idle switch is set correctly.

  • deveous9

    Oct. 31, 2011 11:08 p.m. deveous9 Reader

    i ruled out any air leak problem. I haven't checked the timing yet mostly because i have never set the timing on a vw. how the heck do you set the timing on a 1991 jetta 2.0 gli? And what do you mean by having the throttle switch set correctly?

 
Tire Rack- Revolutionizing Tire Buying

You'll need to log in to post.